Add 21/2 and 90/5
1st number: 10 1/2, 2nd number: 18 0/5
21/2 + 90/5 is 57/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 5 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 2 × 5 = 10,
21/2 = 21 × 5/2 × 5 = 105/10 - Likewise, for the 2nd fraction, since 5 × 2 = 10,
90/5 = 90 × 2/5 × 2 = 180/10 - Add the two like fractions:
105/10 + 180/10 = 105 + 180/10 = 285/10 - 285/10 simplified gives 57/2
- So, 21/2 + 90/5 = 57/2
In mixed form: 281/2
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